Trunnion seat assembly facilitating replacement of hydraulic cylinder
By designing trunnion seat components, including base, gland and trunnion sleeves, the problem of difficulty in replacing hydraulic cylinders is solved, the simplicity and safety of the replacement process are improved, and manpower and material consumption is reduced.
Patent Information
- Application Number
- CN202422345429.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-09-25
AI Technical Summary
It is difficult to replace the hydraulic cylinder during the rolling process, and the existing structure leads to insufficient replacement space, and the replacement process takes a long time and labor and material resources.
A trunnion seat assembly is designed, including a base, a gland and a trunnion sleeve, which can easily replace the hydraulic cylinder through removable connection, and use a trunnion sleeve to be sleeved on the trunnion and fixed with the gland, simplifying the replacement steps.
It provides a simple hydraulic cylinder replacement method, improves maintenance safety and efficiency, and reduces replacement time and manpower consumption.
Smart Images
Figure CN223210190U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of hydraulic cylinder installation, and relates to a trunnion seat component which is convenient for replacing the hydraulic cylinder. Background Art
[0002] Currently, large and medium-sized domestic steel mills frequently need to change production specifications during the rolling process. The rolling mill's rack replacement system utilizes a hydraulic system, with hydraulic cylinders driving the rack forward and backward. Over time, the hydraulic cylinder's piston seal can become damaged and leak oil. When the oil leakage becomes severe, the rack cannot be pulled, requiring shutdown and replacement of the hydraulic cylinder. The original design of this hydraulic cylinder did not allow for replacement, and during the replacement process, the trunnion interfered with the base and bracket, leading to the following issues:
[0003] ① The hydraulic cylinder is located on the trunnion seat, and the trunnions on both sides of the hydraulic cylinder are fixed with shaft sleeves. The total length of the hydraulic cylinder is 5.3m, which is much longer than the distance between the trunnion and the bracket. Because the original trunnion seat of the hydraulic cylinder is high, the hydraulic cylinder will inevitably be blocked by the bracket if it wants to withdraw. If it wants to avoid the bracket, the height of the trunnion seat will interfere, creating a dilemma.
[0004] ② During the replacement process, the hydraulic cylinder needs to be lifted by two overhead cranes and turned over multiple times under the bracket. Maintenance personnel are easily injured by heavy objects when repeatedly tying the lifting belt.
[0005] Replacing the hydraulic cylinder requires 20 hours of work and consumes a lot of manpower and material resources.
[0006] Therefore, without changing the existing structure of the hydraulic cylinder, it is necessary to provide a trunnion seat assembly that is convenient for replacing the hydraulic cylinder. Utility Model Content
[0007] In order to at least solve the problem of difficulty in replacing hydraulic cylinders during maintenance and emergency repairs in the above-mentioned prior art, the present invention provides the following technical solution: a trunnion seat assembly that facilitates replacement of the hydraulic cylinder, the trunnion seat assembly comprising:
[0008] base;
[0009] a gland, the gland being located above the base and detachably connected to the base, the gland having a mounting hole horizontally provided thereon; and
[0010] A trunnion sleeve, the shape of which matches the shape of the mounting hole, the trunnion sleeve is located in the mounting hole, and the trunnion sleeve has an axial hole for fixing the trunnion on the hydraulic cylinder.
[0011] Optionally, in the above-mentioned trunnion seat assembly for facilitating replacement of the hydraulic cylinder, a first connecting hole is vertically provided on the gland;
[0012] The first connecting hole is located on one side or both sides of the mounting hole.
[0013] Optionally, in the above-mentioned trunnion seat assembly for facilitating replacement of the hydraulic cylinder, a second connecting hole is vertically provided on the base;
[0014] The second connection hole is located on one side or both sides of the mounting hole. The second connection hole and the first connection hole are arranged vertically opposite to each other. The second connection hole and the first connection hole have the same diameter.
[0015] Optionally, in the above-mentioned trunnion seat assembly for facilitating replacement of the hydraulic cylinder, the trunnion seat assembly further comprises: a connecting member;
[0016] The connecting piece is used to connect the gland and the base.
[0017] Optionally, in the above-mentioned trunnion seat assembly that facilitates replacement of the hydraulic cylinder, an annular boss is provided at one end of the trunnion sleeve for installation and positioning and preventing the trunnion sleeve from axially moving in the gland.
[0018] Optionally, in the above-mentioned trunnion seat assembly that facilitates replacement of the hydraulic cylinder, an oil filling hole is radially provided on the trunnion sleeve for filling lubricating oil.
[0019] Optionally, in the above-mentioned trunnion seat assembly for facilitating replacement of the hydraulic cylinder, the depth of the mounting hole is greater than or equal to the length of the trunnion sleeve.
[0020] Optionally, in the above-mentioned trunnion seat assembly for facilitating replacement of the hydraulic cylinder, a groove is provided on the base;
[0021] The bottom of the gland is provided with a protrusion matching the groove; or
[0022] The bottom of the pressure cover is located in the groove.
[0023] Optionally, in the above-mentioned trunnion seat assembly for facilitating replacement of the hydraulic cylinder, the base heights on both sides of the groove are different.
[0024] Optionally, in the above-mentioned trunnion seat assembly for facilitating replacement of the hydraulic cylinder, the depth of the groove is less than or equal to the height of the protrusion.
[0025] The beneficial effects of the technical solution provided by the embodiment of the utility model are:
[0026] The present application sets up an ear shaft seat assembly consisting of a base, a pressure cover and an ear shaft sleeve. When in use, the base is placed at the position of the original ear shaft seat after cleaning and welded and fixed. Then the pressure cover is placed on the base, and one end of the mounting hole on the pressure cover is aligned and sleeved on the ear shaft on one side of the hydraulic cylinder. Then, a hammer or other tool is used to insert the ear shaft sleeve into the mounting hole from the other end of the mounting hole so that the ear shaft sleeve is sleeved on the ear shaft. Finally, the pressure cover and the base are connected and fixed. The present application provides maintenance personnel with an extremely simple installation method. When replacing the hydraulic cylinder, only the connecting parts need to be removed to remove the pressure cover. The safety factor and maintenance efficiency of the entire maintenance and emergency repair process are greatly guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 A schematic structural diagram of a trunnion seat assembly for facilitating replacement of a hydraulic cylinder provided in an embodiment of the present utility model;
[0028] Figure 2 A schematic structural diagram of a base in a trunnion seat assembly for facilitating replacement of a hydraulic cylinder provided by an embodiment of the present utility model;
[0029] Figure 3 A schematic structural diagram of a gland in a trunnion seat assembly for facilitating replacement of a hydraulic cylinder provided by an embodiment of the present invention;
[0030] Figure 4 A schematic diagram of the structure of a trunnion sleeve in a trunnion seat assembly for facilitating replacement of a hydraulic cylinder provided by an embodiment of the present utility model;
[0031] Figure 5 It is a structural diagram of a trunnion seat in the prior art;
[0032] In the figure: 1. gland; 11. mounting hole; 12. first connecting hole; 13. protrusion; 2. base; 21. groove; 22. second connecting hole; 3. ear shaft sleeve; 31. shaft hole; 32. annular boss; 33. oil filling hole; 4. bolt. DETAILED DESCRIPTION
[0033] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.
[0034] In the description of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like to indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention. The terms "connected", "connected", and "set" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components; they can be wired electrical connections, radio connections, or wireless communication signal connections. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0035] See also Figure 1-4 , the utility model provides the following technical solutions: an ear shaft seat assembly that is convenient for replacing the hydraulic cylinder, the ear shaft seat assembly includes: a base 2, a pressure cover 1 and an ear shaft sleeve 3. Among them, the pressure cover 1 is located above the base 2, and the pressure cover 1 and the base 2 are detachably connected, such as by fixing the two together through a connecting piece (bolts 4, screws, etc.). A mounting hole 11 is horizontally provided on the pressure cover 1. The shape of the ear shaft sleeve 3 matches the shape of the mounting hole 11. The ear shaft sleeve 3 is located in the mounting hole 11, and it can be understood that the outer diameter of the ear shaft sleeve 3 matches the inner diameter of the mounting hole 11. The ear shaft sleeve 3 has an axial hole 31 for fixing the ear shaft on the hydraulic cylinder. Before installation, by using a plasma cutting machine (such as Figure 5 As shown), the original base is removed and then polished and trimmed to make it flush. During installation, place the base 2 at the location of the original ear shaft seat and weld it to fix it, then place the pressure cover 1 on the base 2, align one end of the mounting hole 11 on the pressure cover 1 and put it on the ear shaft on one side of the hydraulic cylinder, then use a hammer or other tools to pass the ear shaft sleeve 3 from the other end of the mounting hole 11 into the mounting hole 11, so that the ear shaft sleeve 3 is put on the ear shaft, and finally the pressure cover 1 and the base 2 are connected and fixed through the connecting piece. Follow the same operating steps to install the ear shaft on the other side of the hydraulic cylinder on another set of ear shaft seat assemblies. This application provides maintenance personnel with an extremely simple installation method. When replacing the hydraulic cylinder, you only need to remove the connecting piece to remove the pressure cover 1 (referring to moving it outward along the length direction of the ear shaft), and the safety factor and maintenance efficiency of the entire maintenance and emergency repair process are greatly guaranteed. It should be noted that the sum of the heights of the base 2 and the pressure cover 1 is the original ear shaft seat (as shown). Figure 5 to facilitate positioning of the hydraulic cylinder.
[0036] Reference Figure 3 As shown, a first connecting hole 12 is vertically provided on the gland 1, and the first connecting hole 12 is located on one side or both sides of the mounting hole 11. Furthermore, the depth of the mounting hole 11 is not less than the length of the ear shaft sleeve 3.
[0037] Reference Figure 2 As shown, a second connecting hole 22 is vertically provided on the base 2. The second connecting hole 22 is located on one side or both sides of the mounting hole 11. The second connecting hole 22 is arranged opposite to the first connecting hole 12 up and down. At the same time, the second connecting hole 22 has the same diameter as the first connecting hole 12. In this way, the gland 1 and the base 2 can be connected and fixed by inserting the connecting piece into the first connecting hole 12 and the second connecting hole 22 in sequence. Furthermore, a groove 21 is provided on the base 2, and a protrusion 13 matching the groove 21 is provided at the bottom of the gland 1. During installation, the gland 1 is placed on the base 2 so that the protrusion 13 on the gland 1 is located in the groove 21 on the base 2. Preferably, the base 2 on both sides of the groove 21 has different heights. Figure 2 The picture shows two left and right bosses, where the height of the left boss is lower than that of the right boss. This design is for the convenience of installation and removal. The depth of the groove 21 is less than or equal to the height of the protrusion 13. It should be noted that "less than" in this embodiment means slightly less than, for example, the depth of the groove 21 is 1 mm less than the height of the protrusion 13. This design is for the purpose of checking whether the bolt 4 is pressed into place. In other embodiments, the groove 21 is provided only on the base 2, and the pressure cover 1 is a rectangular parallelepiped, and the lower end of the pressure cover 1 is directly inserted into the groove 21.
[0038] Reference Figure 1 As shown, the trunnion seat assembly further includes a connecting piece. The connecting piece (such as a bolt 4, a screw, etc.) is used to connect the gland 1 and the base 2. It is understood that the length of the connecting piece is greater than the height of the gland 1.
[0039] Reference Figure 4 As shown, an annular boss 32 is provided at one end of the trunnion sleeve 3, so that the axial cross-section of the trunnion sleeve 3 is T-shaped. The annular boss 32 is used to prevent the trunnion sleeve 3 from axial movement within the mounting hole 11 on the gland 1, and also serves as a positioning function. Preferably, an oil filling hole is provided on the trunnion sleeve 3 for adding lubricating oil.
[0040] It is understood from common technical knowledge that the present invention may be implemented through other embodiments that do not depart from its spirit or essential features. Therefore, the embodiments disclosed above are, in all respects, merely illustrative and not exclusive. All modifications within the scope of the present invention or equivalent to the scope of the present invention are intended to be encompassed by the present invention.
Claims
1. A trunnion seat assembly for facilitating replacement of a hydraulic cylinder, characterized in that: The trunnion seat assembly includes: base; a gland, the gland being located above the base and detachably connected to the base, the gland having a mounting hole horizontally provided thereon; and A trunnion sleeve, the shape of which matches the shape of the mounting hole, the trunnion sleeve is located in the mounting hole, and the trunnion sleeve has an axial hole for fixing the trunnion on the hydraulic cylinder.
2. The trunnion seat assembly for facilitating replacement of a hydraulic cylinder according to claim 1, characterized in that: A first connecting hole is vertically provided on the gland; The first connecting hole is located on one side or both sides of the mounting hole.
3. The trunnion seat assembly for facilitating replacement of a hydraulic cylinder according to claim 2, characterized in that: A second connecting hole is vertically provided on the base; The second connection hole is located on one side or both sides of the mounting hole. The second connection hole and the first connection hole are arranged vertically opposite to each other. The second connection hole and the first connection hole have the same diameter.
4. The trunnion seat assembly for facilitating replacement of a hydraulic cylinder according to claim 1, characterized in that: The trunnion seat assembly further includes: a connecting piece; The connecting piece is used to connect the gland and the base.
5. The trunnion seat assembly for facilitating replacement of a hydraulic cylinder according to claim 1, characterized in that: An annular boss is provided at one end of the ear shaft sleeve for installation and positioning and preventing the ear shaft sleeve from axially moving in the gland.
6. The trunnion seat assembly for facilitating replacement of a hydraulic cylinder according to claim 5, characterized in that: The ear shaft sleeve is radially provided with an oil filling hole for filling lubricating oil.
7. The trunnion seat assembly for facilitating replacement of a hydraulic cylinder according to claim 1, characterized in that: The depth of the mounting hole is greater than or equal to the length of the ear shaft sleeve.
8. The trunnion seat assembly for facilitating replacement of a hydraulic cylinder according to claim 1, characterized in that: The base is provided with a groove; The bottom of the gland is provided with a protrusion matching the groove; or The bottom of the pressure cover is located in the groove.
9. The trunnion seat assembly for facilitating replacement of a hydraulic cylinder according to claim 8, characterized in that: The bases on both sides of the groove have different heights.
10. The trunnion seat assembly for facilitating replacement of a hydraulic cylinder according to claim 8, characterized in that: The depth of the groove is less than or equal to the height of the protrusion.